Arms · Elbow extension

Kneeling Cable Triceps Extension

The kneeling cable triceps extension is an overhead extension performed on your knees facing a high pulley, with a rope held beside your head. Kneeling locks in a stable base and removes leg drive, so the triceps, especially the long head, can be worked hard while you focus on keeping your elbows still.

Also known as: Kneeling rope triceps extension, Kneeling overhead cable extension, Half-kneeling triceps extension

Muscle group: Arms
Movement pattern: Elbow extension
Type: Isolation
Equipment: Cable machine, Rope or bar, Mat
Difficulty: Beginner

What muscles does the kneeling cable triceps extension work?

Primary movers

Triceps brachii (long head)

Assisting muscles

Triceps brachii (lateral and medial heads)
Anterior deltoid
Rectus abdominis

With the cable in front of you and the arms overhead, the triceps are stretched at the start, and the long head is loaded in a lengthened position.

Kneeling gives a stable base. You cannot use your legs to stay balanced, so you can concentrate on holding your upper arms still.

Facing the machine, the cable pulls you forward and down. That adds a small core demand to resist the pull and keep your torso upright.

It suits people whose balance or shoulders struggle in a standing overhead position, and it gives a different feel from the standing version.

How to do the kneeling cable triceps extension

Setup

1
Attach a rope or bar to a high pulley.
2
Kneel facing the machine on a mat, a short distance back.
3
Grip the attachment with both hands overhead and your elbows bent.
4
Keep your torso upright and your elbows close to your head.

Execution

1
Keep your upper arms still beside your head.
2
Straighten your elbows, pushing the rope forward and down.
3
Squeeze your triceps at lockout.
4
Return slowly until you feel a stretch.
5
Keep your torso upright.
6
Do not let your elbows flare.

Common kneeling cable triceps extension mistakes

Leaning forward to cheat

Tilting toward the machine changes the angle and reduces stretch.

The fix: Stay upright and use a lighter weight.

Flared elbows

Wide elbows shift the load off the triceps.

The fix: Keep your elbows beside your head and pointing forward.

Moving the upper arms

Swinging the arms makes it a press.

The fix: Keep your upper arms fixed.

Short range

Not lowering enough skips the stretch.

The fix: Return until your elbows are fully bent.

How many sets and reps?

Goal	Sets	Reps	Load	Rest
Hypertrophy	3–4	10–15	Moderate, 1–2 RIR	60–90 s
Stretch focus	3	12–15	Moderate, slow lowering	60 s
Beginner	2	12	Light	60 s

Use it as a long-head accessory after pressing. A mat under the knees is useful. Switch between kneeling and standing versions across weeks for variety.

Running the kneeling cable triceps extension in your next block? Hercules logs every set, shows last session's numbers before you lift, and suggests when to add weight.

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